Finding the Fourth Proportional to 142,581.71, 196,783.49 and 82,140.59

Step by Step Solution

1. Step 1: Write the proportion equation
   142,581.71 : 196,783.49 = 82,140.59 : x
2. Step 2: Convert to fraction form
   142,581.71/196,783.49 = 82,140.59/x
3. Step 3: Cross multiply
   142,581.71x = 196,783.49 × 82,140.59
4. Step 4: Simplify right side
   142,581.71x = 16,163,911,970.86
5. Step 5: Solve for x
   x = 16,163,911,970.86/142,581.71
6. Step 6: Final answer
   x = 113,365.96